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A '''frog''' is any member of a diverse and largely Carnivore|carnivorous group of short-bodied, tailless amphibians composing the order (biology)|order '''Anura''' (Ancient Greek ''an-,'' without + ''oura'', tail). The Triadobatrachus|oldest fossil "proto-frog" appeared in the early Triassic of Madagascar, but molecular clock|molecular clock dating suggests their origins may extend further back to the Permian, 265 million years ago. Frogs are widely distributed, ranging from the tropics to subarctic regions, but the greatest concentration of species diversity is in tropical rainforests. There are approximately 4,800 recorded species, accounting for over 85% of extant amphibian species. They are also one of the five most diverse vertebrate orders. The body plan of an adult frog is generally characterized by a stout body, protruding eyes, cleft tongue, limbs...
Image captionVarious types of frogs.
Fossil range
Early Jurassic - Holocene|Present, {{fossil range|200|0}}
TaxonAnura
AuthorityAndré Marie Constant Duméril|Duméril, 1806 (as Anoures)
Range mapDistribution.anura.1.png
Range map captionNative distribution of frogs (in green)
Subdivision ranksSuborders
SubdivisionArchaeobatrachia
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frog
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